http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Production of Hydrogen and Carbon Nanotubes from Methane
Zein, Sharif Hussein Sharif,Mohamed, Abdul Rahman,Sai, P. Sesha Talpa,Zabidi, Noor Asmawati Mohd 한국공업화학회 2004 Journal of Industrial and Engineering Chemistry Vol.10 No.6
The decomposition of methane to produce hydrogen and carbon has been investigated experimentally using 15 ㏖% M/20 ㏖% NiO/TiO₂catalysts (where M = MnO_x, FeO, CoO, and CuO). The physical properties of these catalysts were obtained and their performances were evaluated for the conversion of methane and the CO and hydrogen yields. These catalysts were used in the experiments without any pretreatment. XRD patterns and TEM images of these catalysts show the morphological changes that are due to dopant addition. The results indicate the remarkable influence on the catalytic activity provided by doping. While different types of filamentous carbons are formed on the various Ni-containing catalysts, attractive carbon nanotubes were observed on the Mn/Ni/TiO₂-based catalyst. TEM studies on the used catalyst suggest that its stability depends on growth rate and the morphological structure of the formed carbon.
Development of a River Basin Monitoring System for Malaysia
Nor Bazilah Bopi,Ahmad Fadzil Ismail,Suriza A. Zabidi,Mohammad Kamrul Hasan 보안공학연구지원센터 2016 International Journal of u- and e- Service, Scienc Vol.9 No.7
Flood is a natural disaster that can destroy and damage a lot of properties, infrastructures, facilities, homes, vehicles and can even cause loss of lives. To minimize the hazard risk and loss due to the floods, intensive measures have to be considered. Monitoring any drastic changes in water level or river stage at river basin may not prevent the flood, but this measure benefits the community as early prediction of flood can be done before the water reaches the general population. This paper discusses the development of an informative and interactive river basin monitoring system for online hydrological stations in Kelantan, Malaysia. The first trial version has been assembled using Visual Basic.
Majid Ghasemy,Sufean Bin Hussin,Megat Ahmad Kamaluddin Bin Megat Daud,Ahmad Zabidi Bin Abdul Razak,Mohd Jamil Bin Maah 서울대학교 교육연구소 2017 Asia Pacific Education Review Vol.18 No.4
This study was undertaken to determine the extent to which leadership capabilities and managerial competencies explain leadership performance in Malaysian Higher Education context. Data were collected from academic leaders in 25 public and private universities and colleges using a few previously developed scales in Malaysian context. Next, the collected data through 368 surveys were screened thoroughly prior to the main analysis. A variance-based structural equation modeling approach was adopted and SmartPLS 3 was used to analyze the data, followed by running finite mixture segmentation and importance-performance map analysis. The results did disclose unobserved heterogeneity within the data. Through the study, two models namely low-current-tenure leaders and high-current-tenure leaders models were developed. Moreover, role-specific competency and change-oriented capability were identified as the major areas of improvement to be addressed by managerial activities based on low-current-tenure leaders and high-current-tenure leaders models, respectively.
Hepatoprotective Activity of Methanol Extract of Melastoma malabathricum Leaf in Rats
Farah Hidayah Kamisan,Farhana Yahya,Noor Aisyah Ismail,Syafawati Shamsahal Din,Siti Syariah Mamat,Zalina Zabidi,Wan Noraziemah Wan Zainulddin,Norhafizah Mohtarrudin,Hadijah Husain,Zuraini Ahmad,Zainul 사단법인약침학회 2013 Journal of Acupuncture & Meridian Studies Vol.6 No.1
The present study aimed to determine the hepatoprotective activity of a methanol extract of Melastoma malabathricum leaves (MEMM) using two established rat models. Ten groups of rats (n=6) were given a once-daily administration of 10% dimethyl sulfoxide (negative control), 200mg/kg silymarin (positive control), or MEMM (50, 250, or 500mg/kg) for 7 days followed by induction of hepatotoxicity either using paracetamol or carbon tetrachloride. Blood samples and livers were collected for biochemical and microscopic analysis. Based on the results obtained, MEMM exhibited a significant (p<0.05) hepatoprotective activity against both inducers, as indicated by an improvement in the liver function test. These observations were supported by the histologic findings. In conclusion, M. malabathricum leaves possessed hepatoprotective activity, which could be linked to their phytochemical constituents and antioxidant activity; this therefore requires further in-depth studies.
Syafawati Shamsahal Din,Siti Syariah Mamat,Noor Aisyah Ismail,Wan Noraziemah Wan Zainulddin,Zalina Zabidi,Farhana Yahya,Farah Hidayah Kamisan,Norhafizah Mohtarrudin,Fezah Othman,Zarizal Suhaili,Zainul 셀메드 세포교정의약학회 2012 TANG Vol.2 No.4
The present study aimed to determine the hepatoprotective activity of the chloroform extract of D. linearis leaves (CEDL) using the paracetamol (PCM)- and carbon tetrachloride (CCl4)-induced liver injury models in rats. The rats received dH2O (negative control), 200 mg/kg of silymarin (positive control) or CEDL (50, 250 and 500 mg/kg) orally once daily for 7 days and then were subjected to the hepatotoxic induction on the 7th day. The samples (i.e. blood and liver) were collected and underwent biochemical and microscopical analysis, respectively. From the data obtained, both inducers caused significant (p < 0.05) increase in the levels of AST and ALT when compared to the control group, which were significantly (p < 0.05) reduced by CEDL in a generally dose-dependent manner. These biochemical findings were supported by the histopathological analysis and histological scoring. In conclusion, CEDL possesses potential hepatoprotective activity, which could be associated with its flavonoid and tannin contents with the mechanisms of hepatoprotection linked to either its antioxidant or anti-inflammtory /immunomodulating activities. Further in-depth studies are required to identify the responsible bioactive compound.
Zakaria Mohd Aizuddin,Abdul Razab Mohammad Khairul Azhar,Adenan Mohd Zulfadli,Ahmad Muhammad Zabidi,Tajudin Suffian Mohamad,Samson Damilola Oluwafemi,Abdul Aziz Mohd Zahri 한국원자력학회 2024 Nuclear Engineering and Technology Vol.56 No.1
Ceramic materials are being explored as alternatives to toxic lead sheets for radiation shielding due to their favorable properties like durability, thermal stability, and aesthetic appeal. However, crafting effective ceramics for radiation shielding entails complex processes, raising production costs. To investigate local viability, this study evaluated Malaysian ceramic tiles for shielding in diagnostic X-ray rooms. Different ceramics in terms of density and thickness were selected from local manufacturers. Energy Dispersive X-ray Fluorescence (EDXRF) and X-ray Fluorescence (XRF) characterized ceramic compositions, while Monte Carlo Particle and Heavy Ion Transport code System (MC PHITS) simulations determined Linear Attenuation Coefficient (LAC), Half-value Layer (HVL), Mass Attenuation Coefficient (MAC), and Mean Free Path (MFP) within the 40–150 kV energy range. Comparative analysis between MC PHITS simulations and real setups was conducted. The C3–S9 ceramic sample, known for homogeneous full-color structure, showcased superior shielding attributes, attributed to its high density and iron content. Notably, energy levels considerably impacted radiation penetration. Overall, C3–S9 demonstrated strong shielding performance, underlining Malaysia’s potential ceramic tile resources for Xray room radiation shielding.